Interest and Penalty Waiver

Respected members

I have filed my GST R-1 for june 2021 with taxable value and tax liability but by mistake gst-3 was filed as nill.

So there was tax liability but GST-3 was nil filed.   

Although tax was paid on time and later on we got notice for tax demand and penalty for difference amount then we filed DRC03 as we have the sufficient cash ledger balance which we already paid. 

But now officer has issued demand notice for interest and penalty as DRC03 was filed after 40 days of notice issued. Is there any way we can request for waiver of this interest amount

Pls advice to reduce this demand  amount   

Thanks for your advices